Preparation method of permanently-antibacterial poly guanidine alginate fibers

A technology of seaweed fiber and polyguanidine, which is applied in the direction of fiber chemical characteristics, rayon manufacturing, alginate artificial filament, etc., can solve the problems of poor durability, inability to reuse, not resistant to washing, etc., and achieve good compatibility , Good environmental friendliness, high safety effect

Active Publication Date: 2014-06-04
QINGDAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a preparation method of permanent antibacterial polyguanidine seaweed fiber, by introducing polymer antibacterial agent polyguanidine and light rare earth elements to modify seaweed fiber, so as to solve the problem of the antibacterial effect of functio

Method used

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  • Preparation method of permanently-antibacterial poly guanidine alginate fibers
  • Preparation method of permanently-antibacterial poly guanidine alginate fibers

Examples

Experimental program
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Effect test

Example Embodiment

[0036] Example 1

[0037] (1) Synthesize polyguanidine mother liquor, control its degree of polymerization n to 15, and contain polyguanidine 35Kg. When the temperature of the stock solution drops from 160℃ to 80℃, add 10% sodium alginate solution 650Kg dropwise under stirring, and react at 45℃ 60min.

[0038] (2) Following step (1), add 3% mixed rare earth chloride 0.077Kg dropwise, and react at a constant temperature of 30°C for 45 minutes to obtain a spinning mother liquor.

[0039] (3) According to the existing wet spinning process: spinning, coagulation (calcium chloride coagulation bath with 1.5% mixed rare earth chloride), stretching, and then permanent antibacterial polyguanidine seaweed fiber is obtained.

[0040] The fiber has a 99.9% inhibitory rate against Staphylococcus aureus and Escherichia coli. After washing 100 times, the antibacterial rate is still 99%.

Example Embodiment

[0041] Example 2

[0042] (1) Synthesize polyguanidine mother liquor, control its degree of polymerization n to 21, and contain polyguanidine 0.1Kg. When the temperature of the stock solution drops from 168°C to 60°C, gradually add 10% sodium alginate solution 999Kg under stirring, and keep the temperature at 55°C. Reaction for 90min.

[0043] (2) Following step (1), 3% mixed rare earth nitrate 1.5Kg was added dropwise and reacted at a constant temperature of 32°C for 45 minutes to obtain a spinning mother liquor.

[0044] (3) According to the existing wet spinning process: spinning, coagulation (calcium chloride coagulation bath with 1.5% mixed rare earth chloride), and stretching, the permanent antibacterial polyguanidine seaweed fiber is obtained.

[0045] The fiber has 90% antibacterial rate against Staphylococcus aureus and Escherichia coli. After washing 100 times, the antibacterial rate is still 85%.

Example Embodiment

[0046] Example 3

[0047] (1) Prepare 0.5% sodium alginate solution 200Kg, add dropwise 25% polyguanidine solution 0.44Kg with polymerization degree n of 17 under stirring, heat to 45°C, and react at constant temperature for 60 minutes.

[0048] (2) Following step (1), add 3% mixed rare earth nitrate 0.37Kg dropwise, and react at a constant temperature of 25°C for 45 minutes to obtain a spinning mother liquor.

[0049] (3) According to the existing wet spinning process: spinning, coagulation (calcium chloride coagulation bath with 1.5% mixed rare earth chloride), and stretching, the permanent antibacterial polyguanidine seaweed fiber is obtained.

[0050] The fiber has a 99% inhibitory rate against Staphylococcus aureus and Escherichia coli. After washing 100 times, the antibacterial rate is still 95%.

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Abstract

The invention discloses a preparation method of permanently-antibacterial poly guanidine alginate fibers. The preparation method comprises the following steps: reacting sodium alginate and high-molecular antibacterial agent poly guanidine, and then reacting the reaction product with mixed light-rare-earth elements to obtain high-molecular complex spinneret mother liquor; and finally, with a wet-process spinning process in the prior art, spinning, solidifying and stretching to prepare the permanently-antibacterial poly guanidine alginate fibers. The preparation method disclosed by the invention has the advantages that the high-molecular antibacterial agent poly guanidine and the light-rare-earth elements are introduced for modifying the alginate fibers, so that the technical problems of poor durability of an antibacterial effect, poor washing resistance and no repeatability of functional alginate fibers in the prior art are solved, and simultaneously, the antibacterial effect and the application value of the functional alginate fibers are further improved; the fibers disclosed by the invention not only have the permanent antibacterial and deodorizing function, but also have good static-resistant and flame-retardant functions, can be applied to the fields of military, medical care, home furnishing, home textiles and clothing and the like and have very wide market prospects.

Description

technical field [0001] The invention relates to a preparation method of antibacterial seaweed fiber, in particular to a preparation method of permanent antibacterial polyguanidine seaweed fiber. The permanent antibacterial functional polyguanidine seaweed fiber can be used to make non-woven fabrics and textiles. The subject classification codes are: D01F9 / 04, D01D5 / 06. Background technique [0002] Seaweed fiber and its fabric refer to the fiber material obtained by spinning process and the fabric obtained by pure spinning or blended spinning using sodium alginate, a natural polymer contained in seaweed, as a raw material. Seaweed fiber is derived from algae in the ocean and has good biodegradability and biocompatibility. It can usually be used as medical materials or textile and clothing materials. It has the function of extinguishing and ion exchange, so it can be used as a flame retardant material and a material for trapping heavy metal ions. my country is a large ocea...

Claims

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Application Information

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IPC IPC(8): D01F9/04D01F1/10
Inventor 李群夏延致吕洲赵昔慧王力平
Owner QINGDAO UNIV
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